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Finding the Fourth Proportional to 230,497.55, 318,107.61 and 139,876.58

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Solution

The fourth proportional to 230,497.55, 318,107.61 and 139,876.58 is: 193,042.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,497.55 : 318,107.61 = 139,876.58 : x
  2. Step 2: Convert to fraction form
    230,497.55/318,107.61 = 139,876.58/x
  3. Step 3: Cross multiply
    230,497.55x = 318,107.61 × 139,876.58
  4. Step 4: Simplify right side
    230,497.55x = 44,495,802,968.24
  5. Step 5: Solve for x
    x = 44,495,802,968.24/230,497.55
  6. Step 6: Final answer
    x = 193,042.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.